I woke up this morning to an update notification. Upon telling it to go ahead, the phone rebooted into recovery 3.11 (I'm running a rooted Amstel 2.0 Rom) and said that the update could not be executed as the path could not be found. I found the patch in the /updates folder on the root of the phone. I should have copy/pasted it somewhere else, but assumed it would stay there. I rebooted to system, and it was gone from the cache. In an attempt to try again, I went into *settings* *about phone* *system updates* *update firmware* - this grabbed the file again (a short download) then told me to reboot the phone, it rebooted, showed an install graphic I'd never seen before, then continued with a normal reboot. Once done, I got a popup box saying "Sending update status" (or something of the sort) and now i am running DI06 in the baseband.
So yes, if it fails, or you're interested in trying this, I say go for it!